An improved anvil of a stapler

Abstract

The present invention relates to an improved anvil of a stapler, which comprises an anvil (1), and a sleeve pipe (3) is arranged on the anvil (1). It is characterized in that: a pair of first through holes (5) are arranged at one end of the sleeve pipe (3), an arc-shaped edge trimming (4) is arranged at the other end of the sleeve pipe (3), a second through hole (6) is arranged on the sleeve pipe (3) on one side of the arc-shaped edge trimming (4), a sterile cord (7) is tied on the first through hole (5), and one end of the sterile cord (7) is inserted into the second through hole (6) and then pulled out from the other end of the sleeve pipe (3). The present invention has the advantages of simple structure, convenient use, reduced operation steps, and simpler combination of the anvil and the central rod of the stapler, etc.

Description

Technical Field:

[0002] The present invention relates to the field of surgical instruments, and more specifically, to an improved anvil of a stapler. Background Art:

[0004] In digestive tract surgery, the reconstruction of digestive tract continuity is the most critical technical link. Since the use of a stapler to complete digestive tract reconstruction is simple in operation and reliable in effect. And surgeons can master the technical essentials of completing high-quality anastomosis in a short time through simple standardized training.

[0005] In recent decades, stapler-assisted lower digestive tract reconstruction has become a routine choice for gastrointestinal surgery. However, entering the laparoscopic era, since the tubular stapler is designed for open surgery, its standard operation process is to first transect the digestive tract, perform a purse-string suture on the anvil side first and then insert the anvil, tighten the purse-string suture, fix the anvil after fixation, insert the stapler into the other side of the intestinal tube, puncture the center rod, dock with the anvil, adjust to the appropriate position and then fire to complete the anastomosis. However, completing the purse-string suture, inserting the anvil and then tightening the purse-string suture to fix the anvil under laparoscopy is an operation with very high technical requirements, requiring surgeons to ponder and practice for a long time and find a way suitable for themselves.

[0006] However, this operation has great individual characteristics of the surgeon. Each surgeon may have his own technical characteristics and operation path, and it cannot be widely popularized and promoted. In order to change this situation, someone designed an anti-puncture technique to complete the insertion of the anvil and use a linear cutting stapler to close the digestive tract on the anvil side to replace the purse-string suture, which reduces the surgical difficulty to a certain extent. However, this operation also has defects such as the distance between the closing line and the puncture point is not easy to control and it is difficult to pull down the anvil after closing. Although the prior art has proposed a non-puncture technique to complete the anvil insertion and purse-string suture links, there are still problems such as many operation links and high technical requirements for the combination link between the anvil and the stapler body in actual application. Summary of the Invention:

[0008] The present invention is to overcome the deficiencies in the prior art and provide an improved anvil of a stapler.

[0009] The present application provides the following technical solutions:

[0010] An improved anvil of a stapler, comprising an anvil, on which a sleeve tube is provided. It is characterized in that: a pair of first through holes are provided at one end of the sleeve tube, an arc-shaped edge trimming is provided at the other end of the sleeve tube, a second through hole is provided on the sleeve tube on one side of the arc-shaped edge trimming, a sterile cord is tied on the first through hole, one end of the sterile cord is inserted into the second through hole and then pulled out from the other end of the sleeve tube, and a limit buckle corresponding to and cooperating with the second through hole is tied at one end of the sterile cord.

[0011] Based on the above technical solutions, the following further technical solutions may be available:

[0012] The two first through holes are coaxially distributed, and the axes of the two first through holes are perpendicular to the axis of the sleeve pipe due to the axis of the sleeve pipe.

[0013] The center of the second through hole is on the same straight line as the center of one of the first through holes, and this straight line is parallel to the axis of the sleeve pipe.

[0014] Advantages of the invention:

[0015] The invention has the advantages of simple structure, convenient use, reduced operation links, and simpler combination of the anvil and the center rod of the stapler. Description of the drawings:

[0017] Figure 1 It is a schematic structural diagram of the invention. Specific implementation manners:

[0019] As Figure 1 shown, an improved anvil of a stapler includes an anvil 1. A set of nail grooves 1b are evenly distributed on one end face of the anvil 1 outside the through hole 1a. The through hole 1a is coaxially distributed on the anvil 1.

[0020] A sleeve pipe 3 is coaxially arranged at the bottom of the through hole 1a. There is a certain interval between the sleeve pipe 3 and the wall of the through hole 1a. A plastic top piece (not shown in the figure) is also fitted and buckled on the wall of the through hole 1a. The plastic top piece is a prior art and will not be elaborated here.

[0021] A pair of first through holes 5 are arranged at one end of the sleeve pipe 3 close to the through hole 1a. The two first through holes 5 are coaxially distributed, and the axes of the two first through holes 5 are perpendicular to the axis of the sleeve pipe 3 due to the axis of the sleeve pipe 3.

[0022] An arc-shaped edge 4 is arranged at the other end of the sleeve pipe 3 far from the through hole 1a. A second through hole 6 is arranged on the sleeve pipe 3 on one side of the arc-shaped edge 4. The center of the second through hole 6 is on the same straight line as the center of one of the first through holes 5, and this straight line is parallel to the axis of the sleeve pipe 3.

[0023] Four U-shaped grooves 8 are evenly distributed on the pipe wall of the sleeve pipe 3 between the arc-shaped edge trimming 4 and the first through hole 5. The axis of each U-shaped groove 8 is parallel to the axis of the sleeve pipe 3. Two of the four U-shaped grooves 8 penetrate symmetrically through the pipe wall of the sleeve pipe 3. A U-shaped pressing elastic sheet 9 is arranged inside the sleeve pipe 3. The U-shaped elastic sheet 9 includes an arc-shaped section at the bottom, and elastic sheet bodies also extend from both ends of the arc-shaped section. The arc-shaped section of the U-shaped pressing elastic sheet 9 and one end inside the sleeve pipe 3 are of an integral structure, and the elastic sheet bodies at both ends of the arc-shaped section are respectively located in the corresponding U-shaped grooves 8 that penetrate symmetrically through the pipe wall of the sleeve pipe 3.

[0024] A sterile cord 7 is provided, and then the sterile cord 7 is folded in half. The folded end is inserted into the pair of first through holes 5, and then knotted so that the folded end is fixed and tied to one end of the sleeve pipe 3. Then, the end of the other end of the sterile cord 7 is inserted into the second through hole 6 from the outside to the inside, and then a certain length is pulled out from the other end of the sleeve pipe 3, and a limiting buckle 7a corresponding to the second through hole 6 is tied at the end of the pulled-out end.

[0025] Usage process:

[0026] After the organ is freed, the diseased side of the digestive tract is ligated and blocked with a sterile surgical cord, and then the digestive tract is longitudinally incised 1 cm away from the blocking band on the healthy side. After visually judging that the inner membrane of the digestive tract is intact, it is appropriately extended until the anvil of an improved stapler provided by the present application can be placed therein.

[0027] The anvil provided by the present invention is placed into the digestive tract, and only the part of the limiting buckle 7a of the sterile cord 7 attached thereto extends to the outside of the digestive tract through the incision on one side of the digestive tract.

[0028] Then, the endoscopic linear cutting and closing device is closely attached to the upper end of the digestive tract incision for cutting and closing. During this process, the operator tightens a part of the sterile cord 7 located outside the digestive tract so that the anvil provided by the present invention will not fall into the digestive tract. At the same time, the tightened sterile cord 7 can effectively prevent the situation that the cutting and closing device cuts off or staples, cuts the sterile cord 7 or staples the sterile cord 7 into the tissue. This will provide a better visual field under the endoscope and make the combination of the stapler and the anvil more convenient. And when the puncture rod of the stapler in the prior art pierces into the sleeve pipe 3 of the anvil, it provides a reverse tension to make the combination smooth and stable.

[0029] After the disconnection is completed, the sterile cord 7 outside the digestive tract is pulled so that the arc-shaped edge trimming 4 at the other end of the sleeve pipe 3 extends out of the digestive tract from the incision. After the sleeve pipe 3 is completely exposed, the limiting buckle 7a is untied, the sterile cord 7 is pulled out from the second through hole 6, and then the sterile cord 7 is continuously pulled so that an angle appears between the sterile cord 7 and the sleeve pipe 3, which is convenient for pulling out the anvil from the digestive tract.

Claims

1. An improved anvil of a stapler, comprising an anvil (1), and a sleeve tube (3) is arranged on the anvil (1), and is characterized in that: A pair of first through holes (5) are provided at one end of the sleeve pipe (3), an arc-shaped edge cutting (4) is provided at the other end of the sleeve pipe (3), a second through hole (6) is provided on the sleeve pipe (3) on one side of the arc-shaped edge cutting (4), a sterile rope (7) is tied on the first through hole (5), one end of the sterile rope (7) is inserted into the second through hole (6) and then pulled out from the other end of the sleeve pipe (3), and a limiting buckle (7a) is tied at one end of the sterile rope (7); the two first through holes (5) are coaxially distributed; the center of the second through hole (6) and the center of one of the first through holes (5) are on the same straight line, and this straight line is parallel to the axis of the sleeve pipe (3).

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